OK i got this truck for free and i cant get it to spark.Its a L16 not sure if its a 521 or a 610. Looks like it has a new distributer on it. i had to rewire the coil 12v to the pos and neg going to the dist and it started up for just a bit and now it dont want to fire.If i leave the ignition on and touch the wire from the coil to the distributer it shows spark but if i move the dist 30 degrees or so it dont get spark at all.Is it possible my coil is bad and if so how can i check it.
ignition problems
G'day, Firstly- Do you understand how the spark system works? Simply put - A coil builds up charge when it has current flow and when you break the circuit the coil tries to keep the current flowing by inducing a high voltage. The lobe in the dizzy sets the period for the circuit to be broken by opening the points. The points are adjusted for fine tuning. Knowing there are two actual coils in a "coil" you can simply check across the coil windings using a multimeter looking for resistance. If it sparks then you turn the dizzy and it does not it sounds more like a timing problem more so than a coil problem. If you need more info just ask.
Good luck.
Good luck.
-
gene knight
- Posts: 13
- Joined: Wed Dec 31, 1969 5:00 pm
did you check to see if your ballast resistor is good? it is that little white retangular box next to the coil on the left fender. i had the same problem but at first i had no juice going to the coil and had to print out wiring diagram of my 521 pickup and found out that the previous owner had the wires to the coil wired backwards and then i did a complete tune-up on mine. so lets see here what i did to it to get it there
1. replace ballast resistor
2. replace coil
3. replace points
4. replace condensor
5. replace distributor cap & rotor
6. replace spark plugs & wires
7. replace ignition switch
8. replace fuses
that should get solve your problem
1. replace ballast resistor
2. replace coil
3. replace points
4. replace condensor
5. replace distributor cap & rotor
6. replace spark plugs & wires
7. replace ignition switch
8. replace fuses
that should get solve your problem
yevntry70:
welcome to the board....
it's usually best to start your own thread and post as much info as to what you are working with for others to help you out....
it does sound like the float bowl is running out of fuel...check the accelerator pump?
here's some pages to read that might help you out:
electronic dizzy info:
http://web.archive.org/web/200503120926 ... zy_FAQ.htm
http://zhome.com/ZCMnL/tech/gmhei.html
http://japanesenostalgiccar.com/forum/v ... .php?t=184
all the manuals and wiring diagrams are posted here:
http://www.the620.com/620tech.htm
welcome to the board....
it's usually best to start your own thread and post as much info as to what you are working with for others to help you out....
it does sound like the float bowl is running out of fuel...check the accelerator pump?
here's some pages to read that might help you out:
electronic dizzy info:
http://web.archive.org/web/200503120926 ... zy_FAQ.htm
http://zhome.com/ZCMnL/tech/gmhei.html
http://japanesenostalgiccar.com/forum/v ... .php?t=184
all the manuals and wiring diagrams are posted here:
http://www.the620.com/620tech.htm
[font="arial"]I GOT IT!!!! It turns out that the points were bad even though they were sparking apparently it was not enough. It is purring like a kitten now. Not bad for a little truck that has not been started in about 2 yrs.
1970 Datsun 521 pickup........$100
Replace Coil..............................$25
Points.........................................$ 5
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1970 Datsun 521 pickup........$100
Replace Coil..............................$25
Points.........................................$ 5
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